SQL: Select specified columns with where clause
SQL Basic Select Statement: Exercise-9 with Solution.
From the following table, write a SQL query to locate salespeople who live in the city of 'Paris'. Return salesperson's name, city.
Sample table: salesman
Sample Solution :
SELECT name,city
FROM salesman
WHERE city='Paris';
Output of the Query:
name city Nail Knite Paris Mc Lyon Paris
Explanation :

Pictorial presentation :

Practice Online
Query Visualization:
Duration:

Rows:

Cost:

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Previous: From the following table, write a SQL query to find the unique salespeople ID. Return salesman_id.
Next: From the following table, write a SQL query to find those customers whose grade is 200. Return customer_id, cust_name, city, grade, salesman_id.
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SQL: Tips of the Day
Can a foreign key be NULL and/or duplicate?
First remember a Foreign key simply requires that the value in that field must exist first in a different table (the parent table). That is all an Foreign key is by definition. Null by definition is not a value. Null means that we do not yet know what the value is.
Ref: https://bit.ly/3uVu3OS
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